I am looking for a formula or how to calculate the on the excel the "retirement need to cover yearly withdrawals" and "retirement need to cover charitable donations". I dont think I did this correct at all.

CHAPTER 3, ACTIVITY 3: RETIREMENT CALCULATOR INPUTS: Current Age Retirement Age Amount Saved So Far Current Income Income Growth Rate Savings Rate $2,000 $58,000 3.80% 20.00% 7.00% $288,346.17 $4,884,353.71 APR MAX INCOME PRE-RETIREMENT FV OF SAVINGS 60% $173,007.70 2.30% 4.00% RETIREMENT: % of max income required Amount Needed in First Year of Retirement Annual Growth Rate Retirement APR Retirement Years PLANNED LEGACY DONATION RETIREMENT NEED TO COVER YEARLY WITHDRAWALS RETIREMENT NEED TO COVER CHARITABLE DONASAN TOTAL RETIREMENT NEED $500,000 $64,898.10 $64,898.10 $3,574,175.01 WILL YOU REACH GOAL? CHAPTER 3, ACTIVITY 3: RETIREMENT CALCULATOR INPUTS: Current Age Retirement Age Amount Saved So Far Current Income Income Growth Rate Savings Rate $2,000 $58,000 3.80% 20.00% 7.00% $288,346.17 $4,884,353.71 APR MAX INCOME PRE-RETIREMENT FV OF SAVINGS 60% $173,007.70 2.30% 4.00% RETIREMENT: % of max income required Amount Needed in First Year of Retirement Annual Growth Rate Retirement APR Retirement Years PLANNED LEGACY DONATION RETIREMENT NEED TO COVER YEARLY WITHDRAWALS RETIREMENT NEED TO COVER CHARITABLE DONASAN TOTAL RETIREMENT NEED $500,000 $64,898.10 $64,898.10 $3,574,175.01 WILL YOU REACH GOAL